Interference Quiz Questions and Answers PDF - 17

MCQ 81: For destructive interference, the path difference is

1. odd number of half wavelengths
2. even number of half wavelengths
3. whole number of wavelengths
4. even whole number of wavelengths

MCQ 82: Electrical force exerted by two point charges on each other is inversely proportional to

1. sum of their charges
2. product of their charges
3. distance between them
4. square of distance between them

MCQ 83: Weakest force in nature is

1. electric force
2. gravitational force
3. weak force
4. magnetic force

MCQ 84: Unit for pressure used in weather maps is millibar. 1 millibar is equal to

1. 1000 bar
2. 100 kPa
3. 100 Pa
4. 1 atm

MCQ 85: Energy in deformed solid is called

1. stress energy
2. potential energy
3. kinetic energy
4. strain energy